In C.S. Lewis's Rehabilitations and Other Essays there was a short poem in which Tolkien and Lewis, while discussing dragons, heard a workman in the bar claimed to have seen dragons himself. About the poem, Tolkien said that Jack[note 1] had produced lines that were not entirely accurate examples of Old English metrical devices. The occasion was fictitious, Tolkien never having seen a dragon or any man who said he had. Tolkien recalled Jack telling him a story about F.E. Brightman, an ecclesiastical scholar. One night there was a discussion in the Common Room about dragons and Brightman said, "I have seen a dragon." "Where was that?" "On the Mount of Olives", Brightman replied, never explaining then or later what he meant.